... 219mm 2) surface treatment: galvanized Hot Dipped Galvanized Pipe Proceed FlowBlack Pipe Examination→Acid Washing→Water Washing→Solvent Coating→Linning→ ... pipes/tubes are avalible here2.Length:5.8m,6m-11.8m,12m,or any llength as customer required3.Application ... machines,petro-chemical ,ship,structure pipe,automobile,shock absorber,building,geology,fluid tubes,line pipe etc4.High quality:ISO9001 API5L ...